src/Q3/CreditCard.java


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package Q3;

import java.util.*;

public class CreditCard {
  private int evenSum;
  private int oddSum;
  private int sum;
  private String ccNumber;
  private String company;

  public CreditCard(String num) {
    this.ccNumber = num;
    if (validateCompany()) {
      switch (num.charAt(0)) {
        case '3':
          this.company = "American Express";
          break;
        case '4':
          this.company = "Visa";
          break;
        case '5':
          this.company = "MasterCard";
          break;
        case '6':
          this.company = "Discover";
          break;
      }
    }
  }

  public int getEvenSum() {
    return evenSum;
  }

  public int getOddSum() {
    return oddSum;
  }

  public int getSum() {
    return sum;
  }

  public String getCcNumber() {
    return this.ccNumber;
  }

  public String getCompany() {
    return this.company;
  }

  public boolean isValid() {
    return false;
  }

  public boolean isDivisibleBy10() {
    return false;
  }

  public boolean validateCompany() {
    return this.ccNumber.startsWith("4")
        || this.ccNumber.startsWith("5")
        || this.ccNumber.startsWith("37")
        || this.ccNumber.startsWith("6");
  }

  public boolean validateLength() {
    return false;
  }

  public boolean validateNumber() {
    return false;
  }

  public boolean validateSums() {
    return false;
  }
}